How many letters does the top answer for “unrighteousness by virtue of lacking respect for a god” have?

The most common answer is impiety (7 letters).

Crossword clue: unrighteousness by virtue of lacking respect for a god

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

impiety 7 letters wn-def

unrighteousness by virtue of lacking respect for a god

impiousness 11 letters wn-def

unrighteousness by virtue of lacking respect for a god